Dresden 2026 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 57: Correlated Magnetism – Kagome Systems

TT 57.4: Vortrag

Mittwoch, 11. März 2026, 15:45–16:00, CHE/0091

Pathway to the ground state in Kagome spin ice HoAgGe — •Philipp Gegenwart — Lehrstuhl für Experimentalphysik VI, Universität Augsburg

HoAgGe represents the first crystalline realization of Kagome spin ice and displays striking fractionalized plateau states in magnetic and transport experiments [1,2]. We report single crystal neutron diffuse scattering to map the pathway from paramagnetism via partial order to the Kagome spin ice ground state [3]. The symmetry-broken nature of the latter is evidenced by the nonlinear magnetic susceptibility.
[1] K. Zhao, H. Deng, H. Chen, K.A. Ross, V. Petricek, G. Günther, M. Russina, V. Hutanu, P. Gegenwart, Science 367, 1218 (2020)
[2] K.Zhao, Y.Tokiwa, H.Chen, P.Gegenwart, Nat.Phys. 20,442 (2024)
[3] K.Zhao, H.Deng, H.Chen, N.Ma, N.Oefele, J.Guo, X.Cui, Ch.Tang, M. J. Gutmann, T. Mueller, Y. Su, V. Hutanu, Ch. Jin, P. Gegenwart, arXiv:2505.22544